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Burst Locating Capability of the Korean Solar Radio Burst Locator (KSRBL)
Hwangbo, Jung-Eun,Bong, Su-Chan,Park, Sung-Hong,Lee, Dae-Young,Cho, Kyung-Suk,Lee, Jaejin,Park, Young-Deuk The Korean Space Science Society 2015 Journal of Astronomy and Space Sciences Vol.32 No.1
The Korean Solar Radio Burst Locator (KSRBL) is a solar radio spectrograph observing the broad frequency range from 0.245 to 18 GHz with the capability of locating wideband gyrosynchrotron bursts. Due to the characteristics of a spiral feed, the beam center varies in a spiral pattern with frequency, making a modulation pattern over the wideband spectrum. After a calibration process, we obtained dynamic spectra consistent with the Nobeyama Radio Polarimeter (NoRP). We compared and analyzed the locations of bursts observed by KSRBL with results from the Nobeyama Radioheliograph (NoRH) and Atmospheric Imaging Assembly (AIA). As a result, we found that the KSRBL provides the ability to locate flaring sources on the Sun within around 2'.
MAGNETIC STRUCTURE AND NONTHERMAL ELECTRONS IN THE X6.9 FLARE ON 2011 AUGUST 9
Hwangbo, Jung-Eun,Lee, Jeongwoo,Park, Sung-Hong,Kim, Sujin,Lee, Dae-Young,Bong, Su-Chan,Kim, Yeon-Han,Cho, Kyung-Suk,Park, Young-Deuk IOP Publishing 2014 The Astrophysical journal Vol.796 No.2
<P>The 2011 August 9 flare is one of the largest X-ray flares of sunspot cycle 24, but spatial information is rather limited due to its position close to the western limb. This paper presents information about the location of high-energy electrons derived from hard X-ray and microwave spectra obtained with the Reuven Ramaty High-Energy Solar Spectroscopic Imager (RHESSI) and the Korean Solar Radio Burst Locator (KSRBL), respectively. The KSRBL microwave spectrum shows significant fluxes at low frequencies, implying that the high-energy electrons reside in a coronal volume highly concentrated at strong magnetic fields, and rapidly expanding with decreasing magnetic fields. After a simple modeling of the microwave spectrum, we found that the microwave source should be located above the inner pair of magnetic poles in a large quadrupolar configuration. The time-dependent evolution of the magnetic field distribution and total nonthermal energy derived from the microwave spectra is also consistent with the standard picture of multiple magnetic reconnections recurring at a magnetic null point that forms above the magnetic quadrupoles and moves up with time.</P>
Burst Locating Capability of the Korean Solar Radio Burst Locator (KSRBL)
Jung-Eun Hwangbo,Su-Chan Bong,Sung-Hong Park,Dae-Young Lee,Kyung-Suk Cho,Jaejin Lee,Young-Deuk Park 한국우주과학회 2015 Journal of Astronomy and Space Sciences Vol.32 No.1
The Korean Solar Radio Burst Locator (KSRBL) is a solar radio spectrograph observing the broad frequency range from 0.245 to 18 GHz with the capability of locating wideband gyrosynchrotron bursts. Due to the characteristics of a spiral feed, the beam center varies in a spiral pattern with frequency, making a modulation pattern over the wideband spectrum. After a calibration process, we obtained dynamic spectra consistent with the Nobeyama Radio Polarimeter (NoRP). We compared and analyzed the locations of bursts observed by KSRBL with results from the Nobeyama Radioheliograph (NoRH) and Atmospheric Imaging Assembly (AIA). As a result, we found that the KSRBL provides the ability to locate flaring sources on the Sun within around 2′.
Incidence of Diabetes After Cancer Development : A Korean National Cohort Study
Hwangbo, Yul,Kang, Danbee,Kang, Minwoong,Kim, Saemina,Lee, Eun Kyung,Kim, Young Ae,Chang, Yoon Jung,Choi, Kui Son,Jung, So-Youn,Woo, Sang Myung,Ahn, Jin Seok,Sim, Sung Hoon,Hong, Yun Soo,Pastor-Barriu American Medical Association 2018 JAMA oncology Vol.4 No.8
<P>CONCLUSIONS AND RELEVANCE In this large Korean cohort, cancer development increased the risk of subsequent diabetes. These data provide evidence that cancer is associated with an increased risk of diabetes in cancer survivors independent of traditional diabetes risk factors. Physicians should remember that patients with cancer develop other clinical problems, such as diabetes, with higher frequency than individuals without cancer, and should consider routine diabetes screening in these patients.</P>
Hwangbo, Yul,Lee, Eun Kyung,Son, Ho-Young,Im, Sun-Wha,Kwak, Soo-Jung,Yoon, Ji Won,Kim, Min Joo,Kim, Jeongseon,Choi, Hoon Sung,Ryu, Chang Hwan,Lee, You Jin,Kim, Jong-Il,Cho, Nam H,Park, Young Joo Issued for the Endocrine Society by the Williams & 2018 The Journal of clinical endocrinology & metabolism Vol.103 No.12
Inhibitory Effects of Corni Fructus on Testosterone-induced Benign Prostatic Hyperplasia in Rats
Hyun Hwangbo,Eun Ok Choi,Kyung-Il Kim,Son-Ho Yoon,Jung-Sub Jung,No-Jin Park,Ji-Suk Jeong,Jin-Woo Jeong,Cheol Park,Su Hyun Hong,Jae-Hun Cheong,Yung Hyun Choi 한국식품영양과학회 2017 한국식품영양과학회 학술대회발표집 Vol.2016 No.10